<template>
  <div class="report-container">
    <!-- 头部的面包屑导航栏 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <!-- 为Echarts准备一个具备大小(宽度)的Dom-->
      <div id="main" style="width:100%;height:400px"></div>
    </el-card>
  </div>
</template>

<script>
import * as echarts from 'echarts'
import _ from 'lodash'
export default {
  created() {},
  // Echarts只能当页面元素渲染完毕才可以初始化
  async mounted() {
    var myChart = echarts.init(document.getElementById('main'))
    // 向服务器请求数据
    const { data: res } = await this.$http.get('reports/type/1')
    if (res.meta.status !== 200) return this.$message.error('获取折线图数据失败!')
    // 合并数据
    // const newOptions = { ...res.data, ...this.options }
    const newOptions = _.merge(res.data, this.options)
    // 将数据展示到mychart上
    myChart.setOption(newOptions)
  },
  data() {
    return {
      options: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      }
    }
  },
  methods: {}
}
</script>

.<style lang="less" scoped></style>
